Bug 1704341

I can successfully burn Bluray discs in Brasero, which I verified just now, so I am not sure under what conditions the initial report was made. Brasero supports writing Bluray discs, but if there is a problem with a specific configuration, with some steps to reproduce and figure out where the problem lies, that would be very helpful. My steps to reproduce are:

1. Start Brasero
2. Select "Burn image" and choose an ISO image to write (I used a recent Fedora installation image, as it was around 2GB)
3. Make sure that writable Bluray media is inserted, select the correct drive, click "Burn"
4. Blank the disc if necessary, and wait for the burn to finish (and the checksum of the written disc to be verified

I am using a USB drive (a Verbatim BIAA), and 25GB 2x BD-RE media to test.

(In reply to David King from comment #15)
> I am using a USB drive (a Verbatim BIAA), and 25GB 2x BD-RE media to test.

For reference, this is with RHEL 8.2, and brasero-3.12.2-4.el8.x86_64.

I wasn't the OP on this, and it was a year ago I ran into this. But I think the problem isn't burning a pre-mastered ISO image. It's more about authoring a Bluray. The workflow of insert a blank disc, select some files to add, give it a title, etc, then burn. Would it be possible to test that case before closing?

Annoyingly, the linked KB solution is now hidden. I think it had more info, but I can no longer see it. :-/
https://access.redhat.com/solutions/4093651

Hey James,
I marked the KB solution private so we could rework the wording once I had confirmation from the original customer request that we could close this bug. (The only customer case linked to the bug)  I have loaded up brasero on my work system and I have a USB bluray writer, but I do not have bluray media handy.  Can you please confirm if Project->New Data Project allows you to author data to the bluray device?

-Steve

I don't have a RHEL8 wks handy at the moment. I tried on RHEL7 and got BZ#1456971. It will take a little time to get a test setup on RHEL8.

James,
Do you have an account number with us?  That way I can open a case for you and link it to this bug.  I have asked David if he can test the data project in the meantime as well.

James,
I found your account and opened case 02671123 on your behalf so we can keep track of this in a support ticket.

-Steve

(In reply to Steve Barcomb from comment #20)
> Hey James,
> I marked the KB solution private so we could rework the wording once I had
> confirmation from the original customer request that we could close this
> bug. (The only customer case linked to the bug)  I have loaded up brasero on
> my work system and I have a USB bluray writer, but I do not have bluray
> media handy.  Can you please confirm if Project->New Data Project allows you
> to author data to the bluray device?
> 
> -Steve

I just tried that with some files that added up to around 5 GB and it worked fine.

No further progress on this, other than that I am currently investigating if flags sent to the drive before writing are the culprit (as the write seems to fail because some combinations of those flags are rejected)

As decided on out SST meeting today, we are removing this from our 8.4 RPL list. We will try to fix the bug for 8.5 though (once we have a fix, then we can decide whether it's technically possible and safe to deliver it to older releases through z-stream). David will give us the status update in the following days.

(In reply to David King from comment #45)
> No further progress on this, other than that I am currently investigating if
> flags sent to the drive before writing are the culprit (as the write seems
> to fail because some combinations of those flags are rejected)

It's now looking like this might be an overflow when larger media sizes are used, and as there have been some similar overflow bugs in Brasero before, this would not be unprecedented.

I'm now looking into the flags that get sent to the drive before burning starts, as this seems to be the point at which the burn process fails, but don't have anything to report so far.

Created attachment 1821868 [details]
brasero-log.txt

The problem can be reproduced on the current git version of brasero on Fedora 34 using a BD-R. The problem doesn't happen with a BD-RE.

Debug log attached.

An upstream fix is available here:
https://gitlab.gnome.org/GNOME/brasero/-/merge_requests/14

There are probably a number of other little problems with how Blu-Rays are handled, which should be filed separately so they can be properly prioritised and resources made available to fix them.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (brasero bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:4348